User interface icon for a portion of a display screen



FIG. 1 is a front view of a user interface icon for a portion of a display screen according to the present invention; and,

FIG. 2 is a front view of a third embodiment thereof.

The broken line drawing of a portion of a display screen in both views is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a user interface icon for a portion of a display screen, as shown and described. 